QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/nc216859
USGS nc216859

18 Oct 1989, 01:04

The 1989 Loma Prieta, California Earthquake

A magnitude 6.9 mw earthquake at 17.2 km depth.

Depth17.2 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated2 September 2026Latest timestamp stored in this record

Published location

Where is The 1989 Loma Prieta, California Earthquake?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

37.036167, -121.879833

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Map data © OpenStreetMap contributors

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Continue exploring

Nearby events with a similar magnitude

M 6.9

The 1927 Lompoc, California Earthquake

M 6.82

The 1925 Santa Barbara, California Earthquake

M 7.1

Ridgecrest Earthquake Sequence

M 6.7

The 1983 Coalinga, California Earthquake

M 6.7

Northridge, California, earthquake

M 6.6

1971 San Fernando Earthquake, California

Catalog fields and provenance
Event ID
nc216859
Coordinates
37.0361667, -121.8798333
Network
nc
Significance
1552